#include <stdio.h>

#define PrintDigit( Ch )      ( putchar( ( Ch ) + '0' ) )

/* START: fig1_4.txt */
void PrintOut(unsigned int N) /* Print nonnegative N */
{
	if (N >= 10)
		PrintOut(N / 10);
	PrintDigit(N % 10);
}
/* END */

main() {
	PrintOut(1369);
	putchar('\n');
	return 0;
}
